Expeller or press.



F. V. ANDERSON.

EXPELLER OR PRESS,

APPLICATION FILED MAR. 1.1918.

1 ,321,273. I Patented Nov. 11, 1919.

314/0211 fo'z 27661 6710? l Mrson,

Gnome arena FREDERICK V. ANDERSON, OF CLEVELAND, OHIO, ASSIGNOR TO THE V. D. ANDERSON COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

nxrELLEaon PnEssL Application filed March 1, 1918.

To all whom it may concern:

Be it known that I, FREDERICK V. Annun- SON, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Expellers or Presses, of which the following is a specification.

My present invention pertains to HHDIOVG' ments in expellers or presses, and more particularly to the barrel thereof, and has for its main object the production ofa barrel which, by reason of its constructlon, prevents the finer materials, such as foots, when oil is being expressed, from being forced outwardly through the spaces left between the bars of the barrel.

The press is of the type shown and claimed in Letters Patent Nos. 829,314 and 839,315, dated August '21, 1906, though, of course, the invention is applicable to other types and forms.

The invention is illustrated in the annexed drawings, wherein:

Figure 1 is a transverse sectional view of so much of the frame and barrel of a press as is necessary to illustrate an embodiment of the invention;

Fig. 2 a longitudinal sectional view, on an enlarged scale; and

Fig. 3 a transverse sectional view of a portionof the barrel on a still larger scale.

In the drawings, 1 denotes the-operating or driven shaft of the press, having at ts forward end a feed screw 2, which carries the material to be acted upon inwardly from the feed hopper 3 to the expressing screws 4. Said latter screws are separated and exert great pressure upon the material under treatment, at the same time feeding or forcing the same outwardly through the discharge end of the press. The screws rotate in the direction of the arrow shown in Figs.

1 and 3.

The barrel, being subjected to great nternal pressure, is made quite substantial and may be said to comprise a serles of spaced ribs or frame members 5, and a plurality of longitudinally extendmg bars 6. Bars 7, carrying knives 8, may be employed.

Bars 6 are spaced apart by the beveled or inclined rivet heads 9, the inner edges of the bars standing quite close together and Specification of Letters Patent.

Patented Nov. 11, 1919.

Serial No. 219,837. r

leaving small openings through which the liquid (oil, juice, moisture, etc.) may pass.

In expressing oil it has been found that the foot-s will, to a greater or less extent, pass out with the oil through the openings and to prevent this the interior of the barrel is so shaped as to present a stepped surface, that is one in which there is formed a next bar in the series, such inwardly pro-' jecting portion of face 6 forming an angle with the inner face 0 of the next succeeding bar. There is thus formed a barrel, theinterior face whereof may be said to have a stepped construction, or a barrel the inner face of which is composed of or presents a series of substantially flat faces, which lie in different angular planes, with the forward edge of each bar standing at a greater distance from the axis of the press than the rear end or edge.

WVith a press-barrel thus formed it is found that there is far less tendency for the finer solid materials, such as foots, to be carried outwardly between the bars with the expressed moisture or oil than where the bars are arranged with the adjacent edges of contiguous bars in the same plane.

The means for operating the shaft and the means for retarding and breaking up the material which has been treated as it is discharged from the press are omitted from the drawings; they may be similar to those shown in the patent above mentioned.

Having thus described my invention, what I claim is:

1. In a press, the combination of a screw; and a surrounding barrel, said barrel presenting a stepped interior, with openings extending outwardly from the angles of the steps, that face of the angle, with reference to the advancing or thrust face of the flight of the screw, extending inwardly toward the screw to a greater extent than the immediate adjacent portion of the other face of the angle.

2. In a press, the combination of a screw; and a surrounding barrel, said barrel being formed from a series of spaced bars with rel, for deflecting the material under treatment away from said openings as it is carried around by the screw.

4:. In a press, the combination of a screw; and abarrel surrounding the screw formed from a series of spaced bars, the inner faces whereof are flat and inclined toward each other with the forward edge of each face, with reference to the advancing face or thrust side of the flight of the screw lying at a greater distance from the axis of the barrel than the rear edge.

In testimony whereof I have signed my name to this specification. V

FREDERICK V. ANDERSON. 

